The official EURO-VO Registry:
Other European Registries:
The IVOA Registry of Registries:
Should you have any question on the Registries above, please access our Helpdesk and look at our Knowledge Base for information. You can also submit a ticket if you do not find the answer to your questions in the knowledge base.
Although the IVOA specification for a Registry Resource and Search interface is quite complex, its usage is very easy. You can get familiar with how to query Registries using for instance the EURO-VO Registry search web pages.
EURO-VO Registry Pages
The IVOA (International Virtual Observatory Alliance) has defined the standard for registration of VO Resources. The standard implementation is called a Registry. A Registry is like the Yellow Pages: the place where you look for the location of resources to help you solve your problem.